Wikipedia Article of the Day
Randomly selected articles from my personal browsing history
A unidirectional network (also referred to as a unidirectional gateway or data diode) is a network appliance or device that allows data to travel in only one direction. Data diodes can be found most commonly in high security environments, such as defense, where they serve as connections between two or more networks of differing security classifications. Given the rise of industrial IoT and digitization, this technology can now be found at the industrial control level for such facilities as nuclear power plants, power generation and safety critical systems like railway networks. After years of development, data diodes have evolved from being only a network appliance or device allowing raw data to travel only in one direction, used in guaranteeing information security or protection of critical digital systems, such as industrial control systems, from inbound cyber attacks, to combinations of hardware and software running in proxy computers in the source and destination networks. The hardware enforces physical unidirectionality, and the software replicates databases and emulates protocol servers to handle bi-directional communication. Data Diodes are now capable of transferring multiple protocols and data types simultaneously. It contains a broader range of cybersecurity features like secure boot, certificate management, data integrity, forward error correction (FEC), secure communication via TLS, among others. A unique characteristic is that data is transferred deterministically (to predetermined locations) with a protocol "break" that allows the data to be transferred through the data diode. Data diodes are commonly found in high security military and government environments, and are now becoming widely spread in sectors like oil & gas, water/wastewater, airplanes (between flight control units and in-flight entertainment systems), manufacturing and cloud connectivity for industrial IoT. New regulations have increased demand and with increased capacity, major technology vendors have lowered the cost of the core technology.
History
Jun 18
Isaac Saul
Jun 17
Alice and Bob
Jun 16
Binomial proportion confidence interval
Jun 15
Repetition code
Jun 14
The Drowsy Chaperone
Jun 13
Signal-to-interference ratio
Jun 12
Static web page
Jun 11
Web of trust
Jun 10
List of Unicode characters
Jun 9
Pluggable authentication module
Jun 8
Ground News
Jun 7
Bernoulli process
Jun 6
Legendre symbol
Jun 5
ISO week date
Jun 4
Malassada
Jun 3
Fandom (website)
Jun 2
Irvin D. Yalom
Jun 1
Grade (slope)
May 31
Sodium carbonate
May 30
Intersymbol interference
May 29
Gaussian filter
May 28
Los Alamos chess
May 27
Diode–transistor logic
May 26
Bluesky (social network)
May 25
Zero-crossing rate
May 24
Fowler–Noll–Vo hash function
May 23
Fourier inversion theorem
May 22
Pantone
May 21
DigiCert
May 20
Little Boy Blue